foo::before content: "class"
foo::before color: rgb(0, 128, 0)
bar::before content: "class"
bar::before color: rgb(0, 128, 0)
both::before content: "class"
both::before color: rgb(0, 128, 0)
complex::after content: "complex"
complex::after color: rgb(0, 0, 255)
attribute::after content: "complex"
attribute::after color: rgb(0, 0, 255)